Device for rolling the edge of rubber articles



March 17, 1942.

w. J. BAUER 2,276,367

DEVICE FOR ROLLING EDGE OF RUBBER ARTICLES Filed Feb. 23, 1940 2 Sheets-Sheet 1 miqflmxa INVENTOR WILL/4M l. BAUER MOI F5444,

ATTORNEY March 17, 1942. w, BAUER 2,276,367

DEVICE FOR ROLLING THE EDGE OF RUBBER ARTICLES Filed Feb. 23, 1940 2 Sheets-Shegt 2 INVENTOR W/LL MM J. BAUER ATTORNEY Patented Mar. 17, 1942 T -FFICE DEVICE FOR ROLLING THE EDGE OF RUBBER ARTICLES Wiiliam J. Bauer, New York, N. Y., assignor, by mesne assignments, to Michael Melamid, New

York, N. Y.

ll'Claims.

This invention relates to devicesfor rolling the edge of rubber articles formed of latex or gutta percha when these articles are in an uncured state.

Seeking to provide a device of the above character, the invention contemplates apparatus having an action characteristic of a brushing movement of the handa motion which would be normally employed for curling or rolling the edge of an article made of latex or gutta percha.

The articles under contemplation are usually formed by dipping a series of moving forms in a bath of latex or gutta percha. When the coated forms leave the bath, the coating-which is the article being formed-is tacky and the edge thereof will cohere to form a head when said edge is curled or rolled upon itself. When cured, this bead will be permanent and the article may be handled without destruction thereof.

After the coated forms leave the bath and before the films formed thereon are cured, it is contemplated to bring into contact with the edge of each film coating, a member having a motion simulating a brushing motion of the hand. It is also contemplated, as the coated forms move by said brushing member, to impart first a relatively small curl to the edge of the filmy articles and then a progressively greater curl until the articles leave association with said brushing member. At this time the edge will be formed with a bead of desired form.

It is desirable that the forms turn on their axes as they move by the brushing member, hence it is contemplated to provide means for rotating the forms so that all portions of the edge I of the filmy articles are presented to the brushing member for curling thereby.

In providing a device as above stated, it is contemplated to incorporate a plurality of brushing members which may be selectively positioned for brushing association with the edges of the .film coatings on the forms.

The device, as at present conceived, comprises a brushing member pivotally mounted at one end thereof and connected, at its other endto a cam actuated swingable bracket, the cam imparting a substantially rectangular motion to the adjacent end of the brushing member. It is evident then, that the entire brushing member will have this rectangular'motion but in progressively greater degree from the pivot thereof to the end adjacent the swingable bracket.

With the foregoing in mind, the objects, features and advantages of the invention will become more clearly apparent as the following specification progresses, said specification'being based on the accompanying drawings in which the invention, in exemplary'form, is depicted.

In the drawings:

Fig. l is atop plan view of a device as contemplated herein, and shown associated with a plurality of moving film'bearing forms.

Fig. -2 is a front view thereof.

Figs. 3 to 6 inclusive are end views of the device and illustrate, progressively, the movement of the brushing member in relation to the edge of the article on a form.

In that embodiment. of the invention which is illustrated, the forms 10 are shown as mounted upon a moving conveyor chain I l, the latter being supported as by the-shelf or the like H. The forms are shown as being vertically upright, but maybe in-depending position, if'desired, it only being essential that the edge of each of the articles 13 on the forms, be properly present'for action thereon'by the brushing blade of the device.

The brushing or edge curling member in the present instance, comprises a blade M of suitable length-and made of a material such as rubber. It is preferred tomount a plurality of such blades in a holder it, but in sucha manner that only one of said-blades is associated with the traveling forms a I B for curling the edges ofarticles on said forms.

The blade holder I5 at one end thereof, is mounted for pivotal movement :as on a knuckle or universaljoint It, the latter being supported on a bracket I1 mountedon a base 18. The other end of the blade holder is also provided with a universal joint l9 which is carried on a swingable bracket 20, formed with a cam opening 2!, and mounted on a stud 22 fixed in a bracket '23 on the base 18. The-portionof the bracket 26 engaged with the stud is preferably slotted as at 24. 'It is evident then that the bracket 2c is mounted for swinging movement on the stud 22 and for limited vertical movement as permitted by the slot -24.

In the cam opening 2|, there is positioned a rotating cam '25 having eccentric portions, the cam being designed to cause the bracket 20 .to make a combined swinging and vertical motion on stud 22 so that the portion of the universal joint i9 fixed therein will impart a substantially rectilinear motion to the blade holder and thus to the blades l4. Inasmuch as the other endof the blade holder is-pivoted on the joint'l6, the mentioned rectilinear movement of the blades will be greatest near the joint l9 and will become decreasingly less as the joint I6 is approached.

Rotating motion is imparted to the cam 25 in any suitable manner-in this instance by an electric motor 26 supported on a standard 21 formed on the base l8.

In order to obviate displacement of the blade holder, and of the blades, from the position set, the bracket 20 may mount a detent 28 as on the boss 29, said detent being selectively engageable in one of the seats 30 formed in bosses on the blade holder. Freedom in this mounting may be provided for the slight angular disalignment be- I tween the parts of the joint I!) which occurs during the combined swinging and vertical movement of the bracket 20. Means such as the spring 3| may be provided for urging the detent 28 into the selected seat 39 and a knob 32 may be formed with the detent for manual retraction thereof when rotation of the blade holder is desired during selection of the operating blade.

The device above described is set in such relation to the edges of the articles I 3 on the forms It} as to bring the operating blade l4 into contact with said edges, as the forms move by, to increasingly curl them upon themselves. As seen in Fig. 3, with the eccentric portion of the cam 25 in the low position the blade 4 will be out of contact with the edge of the article l3. As the cam rotates in the direction of the arrow and approaches the position shown in Fig. 4, the blade engages this edge. Continued rotation of the cam to the position shown in Fig. 5 will cause the blade I 4 to brush upwardly and to roll the edge of the article. Fig. 6 shows a recovery position from which the blade moves to the position shown in Fig. 3.

It must be borne in mind that the articles move, in the device illustrated, from right to left. Hence the articles are presented to the brushing blade at its end adjacent the pivot joint I5. At this point the rectilinear motion of the blade is slight. As the articles progress towards the left, they are brushed by the blade in increasingly greater strokes until when they leave association with the blade, the desired bead is formed on the edge of said articles.

It will be noted that the blade makes and loses contact with the article in its movement in exact simulation to a brushing movement of the hand during a manual edge rolling function. It will also be noted that rotation is imparted to the forms as by means of a rail 33, or by other suitable means, so that the entire periphery of the edge of the article is brought into contact with the brushing blade.

The inherent tackiness of the material from which the articles I3 are formed, will cause the bead thus produced to maintain its shape until set by later curing operations.

While a preferred form of the invention has been disclosed, many variations thereof may be produced to perform according to the principles set forth herein. The invention as defined in the appended claims should, therefore, not be unduly limited by this disclosure which, while preferred, is intended as by way of example only.

What I claim as new and desire to secure by Letters Patent, is

1. A device for forming a bead upon the edge of a rubber article or the like disposed upon a form, comprising an elongated straight edged member pivotally mounted at one of its ends, and means connected with its other end for imparting a wobbling motion to said member about its pivotally supported end.

2. A device for forming a bead upon the edge of a rubber article or the like disposed upon a form, comprising an elongated straight edged member pivotally mounted at one of its ends, said member being ofiset in relation to said pivotal mount, and means connected with its other end for imparting a wobbling motion to said member about its pivotally supported end.

3. In combination with a series of revolving forms having rubber articles or the like thereon, means for forming a bead upon the edge of each of said articles comprising a brushing blade, means for moving the revolving forms along the edge of the blade, and means for moving said blade into intermittent brushing contact with the edges of said articles, the length of said contact between the blade and the edges being increasingly greater as said forms move along the length of said blade.

4. In combination, a series of moving and revolving forms shaving rubber articles or the like mounted thereon, and means for forming a bead upon the edge of each of said articles, said means comprising a member having a wobbling motion about one end, means for moving the revolving forms along the edge of said member and in the path of its wobblin motions to secure intermittent brushing contact therewith, said wobbling member having increasingly longer brushing contact with the edges of said articles as said articles progress along the length of said member.

5. A device of the character described for forming a bead upon the edge of a rubber article or the like disposed upon a form comprising a blade for brushing contact with the edges of rubber articles or the like to form beads on said edges, a universal pivot for one end of said blade, a bracket, means for imparting a combined swinging and vertical motion to said bracket, and a universal joint connected between said bracket and the other end of said blade.

6. A device of the character described for forming a bead upon the edge of a rubber article or the like disposed upon a form comprising a blade for brushing contact with the edges of rubber articles or the like to form beads on said edges, a universal pivot for one end of said blade, a bracket, cam means for imparting a combined swing and vertical motion to said bracket, and flexible means connecting said bracket and the other end of said blade.

7. A device of the character described for forming a bead upon the edge of a rubber article or the like disposed upon a form comprising a blade for brushing contact with the edges of rubber articles or the like to form beads on said edges, a universal pivot for one end of said blade, a bracket having an extension provided with a slot, a fixed stud engaged in said slot, means for moving said bracket in a combined swinging and vertical path on said stud, and a universal joint connection between said bracket and the other end of said blade.

8. A device of the character described for forming a, bead upon the edge of a rubber article or the like disposed upon a form comprising a plurality of blades for selective brushing contact with the edges of rubber articles or the like to form beads on said edges, a member mounting said blades, a universal pivot at one end 01' said member and on the axis thereof, a bracket, a plurality of seats in the other end of said member, detent means carried by said bracket and selectively engaged in the seats in said member, means for imparting a combined swinging and vertical motion to said bracket, and a universal joint connection between said bracket and the other end of said member.

9. A device of the character described for forming a bead upon the edge of a rubber article or the like disposed upon a form comprising a plurality of blades for selective brushing contact with the edges of rubber articles or the like to form beads on said edges, a member mounting said blades, a universal pivot at one end of said member, and on the axis thereof, a bracket, a plurality of seats in the other end of said member, detent means carried by said bracket and selectively engaged in the seats in said member, cam means for imparting a combined swinging and vertical motion to said bracket, and flexible means connecting said bracket and the other end of said member and at the axis of said member.

10. A device of the character described for forming a bead upon the edge of a rubber article or the like disposed upon a form comprising a plurality of blades for selective brushing contact with the edges of rubber articles or the like to form beads on said edges, a member mounting said blades, a universal pivot at one end of said member and on the axis thereof, a bracket having an extension provided with a slot, a fixed stud engaged in said slot, means for moving said bracket, in a combined swinging and vertical path about said stud,- a universal joint connection between said bracket and the other end of said member, a plurality of seats in said other end of the member, and detent means carried by said bracket and selectively engaged in seats in said member.

11. In apparatus of the character indicated: a bead-rolling member for forming an annular head on the open end of a thin, hollow, dipped rubber article, comprising an elongated brush member pivotally supported at one end and adapted for engagement with the article, and r0- tatable eccentric means at its opposite end to support the same thereat and to actuate said brush member for contact with the article by imparting a wobbling motion to the brush member about its pivotally supported end.

WILLIAM J BAUER. 

